.b-selected-time-span button{
  background:transparent;
  border-radius:50%;
  width:1em;
  height:1em;
  display:flex;
  align-items:center;
  justify-content:center;
  color:inherit;
  border:0;
  padding:0.8em;
  cursor:pointer;
}
.b-selected-time-span button:hover{
  background:rgba(255, 255, 255, 0.2);
}